1979 Johnson Outboards V-4 Models Factory OEM Service Repair Manual P/N JM-7909, Page 99Get this manual
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5FINAL CLEARANCE should made a1ter installation to insue that the mini ring-to-groove clearance 01 0.0015" (0.038existsThis done with 1eeler gage as shown in Figue 5-57 11 NOTE
Figure 5-5